Sewing-machine



' U ITED STATE I PATENT OFFICE.

'ELOI BOUSOAY, OF NORWALK, OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 261,578, dated July 25,1882.

Application filed October 529, 1881.

To all whom it may concern:

Be it known that I, ELOI BOUSGAY, of Norwalk, in the county of Huron andState of Ohio, have invented a certain Irhprovementin Sewing-Machines;and I do hereby declare that'the following is a full, clear, andcomplete description thereof.

The nature of this invention has reference to sewing-machines, and moreparticularly to that class of said machines in which the shuttle-carrierand feed mechanism are driven by an upper needle-bar-operating shaftco-operating with eccentrics or cranks and levers arranged below.

The devices heretofore adopted for connecti ng the upper and loweroperative mechanism in the abovesaid class of machines have beencomplicated by reasonof their consisting of several parts carefully andexpensively jointed to each other. 7

To avoid the complicated devices for connecting the upper and lowermechanism above alluded to, and reduce the same to a minimum,

and a consequent reduction in the expense of manufacture, and at thesame time obtain all the essential movements for a perfect working ofthe machine, are the purpose of this invention, which is constructed andoperated substantially as follows, reference being had to theaccompanying drawings for illustrating the same, and making a part ofthis specification, in which- Figure 1 is a plan view of the under sideof a sewing-machine, showing the shuttle-carrier and feed-shaft. Fig. 2is a view of the improved device for connecting the needle-baroperatingshaft with the shuttle-carrier and the feed-operatin g shaft.

Like letters of reference refer to like parts in the views. 7

As shown in Fig. 2, A represents a bifurcated lever housed in thehollowstandard B of the machine. (Shown in transverse vertical section.) Theupper end of the bifurcated 1ever terminates in aring, within which isfitted an eccentric, 0, secured on the needle-bar-opcrating shaft D. Inlieu of an eccentric, a crank may be used. An eccentric, however, ispreferable.

F is a sleeve inclosinga stud, F. Said stud (No model.)

forms a pivotal point for the horizontal vibrajoint-connection, I,whereas the limb J is connected to a disk or crank-wheel, K, on thefeed-shaft L by a suitable wrist-and-box con-v nection, as seen at M,Fig. 2, whereby said shaft L is rotated for operating the feed mechanismof the machine. (Not shown in the drawings, as it forms no part of theimprovement herein specified.)

It is not essential that the bifurcated lever should be of the specialshape shown in the drawings, so long as the leveris without joints, andthe limbs thereof respectively connected to the disk or crank K andshuttle-carrier for the purposes above mentioned.

The arms G J may be attached to each other below the pivotal point F atany suitable position in relation to the shuttle-driver H andneedle-bar,.and said pivotal point may be arranged in a slot in thelever, without departing from the nature of said invention.

The practical operation of the above-described bifurcatedlever-connections 0f the eccentric (J, shuttle-carrier H, and shaft L,actuating the feed mechanism of the machine, is substantially asfollows: The shaft D, carryin g the cam G for operating the needle-bar,is or may be made to revolve by the ordinary means adopted for thatpurpose. As the said cam G revolves it imparts to the bifurcated lever avertical reciprocating movement, there-. by revolving the disk orcrank-wheel K by its connection with the limb J of thelever, which inturn causes the shaft L to revolve for operating the feed'mechanism.During this vertical movement of the lever it is given a horizontalvibratory motion by means of the pivotal stud or fulcrum F. The limb Gof the lever, by its peculiar connection to the rearend of theshuttle-carrier H, communicates to said carrier only the horizontalvibratory movement of the bifurcated lever, and that sufficiently tooperate successfully the shuttle in connection with the said carrier.

Heretofore in this class of sewing-machines, wherein the shuttle-carrierand feed mechanism are driven from an upper needle-bar-operatin g shaft,the connecting device between the upper and lower mechanisms consists ofa greater or less number of parts, but which number of parts is avoidedby substituting therefor the bifurcated lever herein described, whichconsists of a single piece interposed between the upper and lowermechanisms-that is to say, connecting the eccentric G to theshuttle-carrier H and feed-shaft for operating the same. The said leverreceives its duplex movements for the purposes specified by means of theoccentric and pivotal stud or fulcrum, as set forth, thereby renderingthe said operative device simple and inexpensive in structure, andpractically successful in its operation.

What 1 claim as my invention, and desire to secure by Letters Patent,is-

1. In sewing-machines,a pendentbifurcated lever arranged in relation toand in combination with the eccentric O on the needle-baroperatingshaft, shuttle-carrier, and shaft opcrating the feed mechanism,substantially as described, and for the purposes set forth.

2. In sewing -machines, the combination, with the eccentric on the uppershaft and the bifurcated lever, of a pivoted stud or fulcrum arranged inconnection with the said lever, causing the same to be vibrated by saideccentric-in a horizontal direction conjointly and synchronously withthe vertical reciprocating movement thereof, thereby producing a duplexaction of the lever, for the purpose specified, and substantially as setforth.

3. In sewing-machines, the combination of the eccentric O, bifurcatedlever, pivotal stud or fulcrum F, feed-shaft and shuttle-carrier, andtheir respective connections to the bifurcations of the lever,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ELOI BOUSU AY.

Witnesses: I

W. H. Buamnen, J. H. BURRIDGE.

